J/ApJ/747/107ivo://CDS.VizieR/J/ApJ/747/107doi:10.26093/cds/vizier.17470107CDSKim D.W.Protopapas P.Trichas M.Rowan-Robinson M.Khardon R.,Alcock C.Byun Y.-I.2017-11-06T12:24:16Z2012-02-27T09:54:28ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frquasarsactive-galactic-nucleimagellanic-cloudsccd-photometryx-ray-sourcessurveysWe present a catalog the 2566 QSO candidates in the MACHO LMC database. In these catalogs, we complied number of properties of the objects including RA, Dec, crossmatched IDs with several catalogs, magnitudes, photometric redshifts, etc. See Kim et al. (2011ApJ...735...68K) for the SVM (a.k.a. Support Vector Machine, a supervised machine learning algorithm) QSO classification model based on the time variability of lightcurves. We used the model to select the 2566 QSO candidates. In this work, we employed multiple diagnostics such as X-ray flux, mid-IR color and AGN SED fitting in order to select 663 promising QSO candidates among the 2,566 candidates. These candidates are flagged in the catalog. We calibrated the MACHO RA and Dec of the candidates using the UCAC3 catalog and improved the average astrometric accuracy from ~3" to ~0.5".2012ApJ...747..107Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/747/107CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-)I/284 : The USNO-B1.0 Catalog (Monet+ 2003)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)IX/41 : XMM-Newton Serendipitous Source Catalogue 2XMMi-DR3 (XMM-SSC, 2010)IX/29 : ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000)http://wwwmacho.anu.edu.au/ : MACHO Project Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/747/107https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/747/107http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/747/107https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/747/107https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/747/107http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/747/107GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/747/107/table2 (QSO candidates in the LMC fields)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/747/107/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/747/107/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/747/107/table2?GETtext/xml+votable180.050000true76.01167-69.096080.0055555555555555564/2068 5/8263 8268 8269 8276 8277 8278 8280 8281 6/33043 33045 33046 33047 33049 33050 33051 33061 33063 33116 33117 33118 33132 33133 33136 33137 37514 37536 37538 375442.0616683193919197e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/747/107?format=asciiX-raydefaultJ/ApJ/747/107/table2QSO candidates in the LMC fields8.0mag? SAGE Spitzer/IRAC 8.0 magnitudemagphot.flux.density;em.IR.8-15umfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMACHOMACHO ID (FFF.NNNNN.NNNN)meta.id;meta.maincharRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainVmagMMACHO apparent V magnitudemagphot.mag;em.opt.VfloatRmagMMACHO apparent R magnitudemagphot.mag;em.opt.RfloatProbproduct of SVM probability of B and R bandsstat.probabilityfloatProbB? SVM probability of MACHO B band lightcurvestat.fit.goodnessfloatnullableProbR? SVM probability of MACHO R band lightcurvestat.fit.goodnessfloatnullableRA1deg? USNOB1.0 Right Ascension (J2000)degpos.eq.ranullableDE1deg? USNOB1.0 Declination (J2000)degpos.eq.decnullableRmagU? USNOB1.0 apparent R magnitudemagphot.mag;em.opt.RfloatnullableUSNOB1.0USNOB1.0 ID (NNNN-NNNNNNNN)meta.idcharUmag? Apparent U magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? Mean error on Umagmagstat.error;phot.mag;em.opt.UfloatnullableBmag? Apparent B magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Mean error on Bmagmagstat.error;phot.mag;em.opt.BfloatnullableVmag? Apparent V magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? Mean error on Vmagmagstat.error;phot.mag;em.opt.VfloatnullableImag? Apparent I magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag? Mean error on Imagmagstat.error;phot.mag;em.opt.Ifloatnullable2MASS2MASS ID (HHMMSSss+DDMMSSs)meta.idcharJmag? 2MASS J magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? Mean error on Jmagmagstat.error;phot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? Mean error on Hmagmagstat.error;phot.mag;em.IR.HfloatnullableKmag? 2MASS Ks magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? Mean error on Kmagmagstat.error;phot.mag;em.IR.KfloatnullableSAGE? SAGE IDmeta.idnullable3.6mag? SAGE Spitzer/IRAC 3.6 magnitudemagphot.mag;em.IR.3-4umfloatnullablee_3.6mag? Mean error on 3.6magmagstat.errorfloatnullable4.5mag? SAGE Spitzer/IRAC 4.5 magnitudemagphot.mag;em.IR.4-8umfloatnullablee_4.5mag? Mean error on 4.5magmagstat.errorfloatnullable5.8mag? SAGE Spitzer/IRAC 5.8 magnitudemagphot.flux.density;em.IR.4-8umfloatnullablee_5.8mag? Mean error on 5.8magmagstat.errorfloatnullablee_8.0mag? Mean error on 8.0magmagstat.errorfloatnullableChandraChandra ID (JHHMMSS.s+DDMMSS)meta.idcharFlux1? Chandra flux in 0.5-2keV bandmW.m**-2phot.flux;em.X-ray.softdoublenullableFlux2? Chandra flux in 2-7keV bandmW.m**-2phot.flux;em.X-raydoublenullableXMMXMM ID (2XMMJHHMMSS.s+DDMMSS, 2XMMiJHHMMSS.s+DDMMSS)meta.idcharFlux3? XMM flux in 0.5-2keV bandmW.m**-2phot.flux;em.X-ray.softdoublenullableFlux4? XMM flux in 2-4.5keV bandmW.m**-2phot.flux;em.X-ray.mediumdoublenullableFlux5? XMM flux in 4.5-12keV bandmW.m**-2phot.flux;em.X-ray.mediumdoublenullable1RXSROSAT All-Sky Survey faint source ID (JHHMMSS.s+DDMMSS)meta.idcharzph? Photometric redshiftsrc.redshiftfloatnullableLXChandra? Chandra luminosity1e-07Wphys.luminosity;em.X-raydoublenullableLXXMM? XMM luminosity1e-07Wphys.luminosity;em.X-raydoublenullablefSAGESAGE flag (1)meta.codecharfstellar[ABN] Stellar flag (2)meta.codecharfphoto[GNQ] Photometric-redshift flag (3)meta.codecharfchi2? From SED fitting (-1 = No fitting)stat.fit.chi2floatnullablefXrayX-ray source flag (4)meta.codecharfconf[1]? 1: high confidence QSOsmeta.codeintnullableOQSOCrossmatched QSOs (lmc.fff.f.nnnnn) (5)meta.idcharOnon-QSOCrossmatched QSOs (lmc.fff.f.nnnnn) (6)meta.idcharSimbadSimbad column added by the CDSmeta.ref.urlchar